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Unit 4
Lecture #1
I. Divisions of the Nervous System (pgs. 344-370)
a. Functions: (see last paragraph on pg. 344)
b. Major Divisions: (wait until lecture)
| central
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nervous system
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| | sensory
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| peripheral
| | somatic
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| | motor
| |
| | | autonomic
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c. Unique characteristics of nerve tissues: (complete in class)
1. Irritability -
2. Conductivity -
II. Cells of the Nervous System (pg. 344)
a. Types: (describe each in detail)
1. Neuroglia -
2. Neuron -
3. Nerves -
b. Structure (3 main parts): (pgs. 345-349)
1. Cell body (describe contents) -
- Nucleus (name the genetic material found inside, remember your biology)
2. Dendrite (function) -
3. Axon (function) -
- Predict the effect on the part of a severed axon that is no longer connected t its neuron cell body. (pgs. 345-346)
Lecture #2
4. Other Features:
- Myelin Sheath (describe) -
- Neurilemma (describe) -
c. Make a drawing of a Neuron. Use the diagram on pg. 347 as a guide.
Labels
dendrites
nucleus
axon hillock
axon
myelin sheath
Schwann cells
node of Ranvier
synaptic knobs
III. Organization of the Nervous System (pg. 349)
white matter -
gray matter -
nerve tracts (wait until lecture) -
nuclei (wait until lecture) -
IV. The Synapse - (pg. 360) Discuss the pathway of touching a hot pan. (wait until lecture)
(Describe each)
1. presynaptic membrane -
2. synaptic cleft -
3. postsynaptic membrane -
| Afferent | vs. | Efferent |
| | (wait till lecture) |
Lecture #3
Sense of Sight (pgs. 457-474)
I. Visual Accessory Organs: (pgs. 457-460)
a. Protective Features
1. Eyebrows and Bony Orbit (what do you think) -
2. Eyelids (function) -
3. Eyelashes (what do you think) -
4. Lacrimal glands (function)
b. Six Extrinsic Eye Muscles (names and movement): (pg. 460)
II. Structure of the Eye
3 major coats or tunics of eye: (name them)
a. Outer tunic (fibrous) -
1. Cornea - (discuss)
2. Sclera - (discuss)
b. Middle Tunic (vascular) - (discuss each)
1. Choroid Coat -
2. Ciliary Body -
3. Iris -
c. Inner tunic (nervous) - (pg. 465)
1. Retina -
Macula Lutea -
Fovea Centralis -
Optic Nerve -
Optic Disk -
Lecture #4
2. Visual Receptors (discuss each): (pg. 469)
Rods -
Cones -
a. Bipolar & Ganglion cells (look at fig. 12.34)
Can you find anything weird about the human eye?
III. Compartments of the eye (wait until lecture)
anterior chamber -
posterior chamber -
aqueous humor -
vitreous humor -
Pathway of light through eye: (pg. 467)
Functions of the Complete Eye: (pg. 468-474)
Refraction -
Lenses -
a) Biconvex
b)Converging
c)Focal Length
|
vs.
vs.
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Biconcave
Diverging
Thick Lens
Thin Lens |
Accommodation -
Focusing on objects - (3 parts)
1.
2.
3.
Near Point of Vision -
Lecture #5
Eye Disorders: (Use the glossary and index)
1. Myopia -
2. Hyperopia -
3. Presbyopia -
4. Astigmatism -
5. Strabismus -
6. Color Blindness -
7. Glaucoma -
8. Cataracts -
Lecture #6
Ear Structure (pgs. 446-452)
The ear serves 2 purposes:
1.
2.
Auditory Structures and Their Functions
A. External Ear
1. Auricle -
2. External Auditory Meatus -
3. Cerumen -
4. Tympanic Membrane -
B. Middle Ear
1. Tympanic Cavity -
2. Eustachain Tube (Auditory tube) -
3. Ossicles -
C. Inner Ear
1. Vestibule -
a. Oval Window -
b. Round Window -
2. Cochlea -
a. Scala Vestibuli -
b. Scala Tympani -
c. Scala Media (Cochler Duct) -
1. Tectorial Membrane -
2. Vestibular Membrane -
3. Basilar Membrane -
4. Organ of Corti -
Lecture #7
Equilibrium - Sense of Balance (pg. 453-44)
I. Organs of Static Equilibrium
Vestibule:
A. Utricle -
B. Saccule-
1. Structures:
Macula -
Otoliths -
2. Function:
II. Organs of Dynamic Equilibrium (pg. 455-456)
A. Semicircular Canals (Ducts)
1. Structure:
Ampulla -
Crista Ampullaris -
2. Function -
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Moreno says:
Should you go to the website? A good student would.
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